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suppose helium nuclei has exactly the same mass as adding two single protons and neutrons the suns luminosity would bea
neon lamp spectrum shows many more distinct lines than that of hydrogen lampthe reason is thata neon lamp is brighterb
three helium nuclei fuse together forming one carbon nucleus the mass of carbon is less than three times the mass of
what is a by-product that could form from the condensationelimination of 13-diphenylacetone in a reaction with benzil
calculate the oh concentration of a solution of na2cro4 0225m the sodium salt of chromic acid chromic acid is h2cro4 a
calculate the concentration of cro42- in a solution that is 00375m in chromic acid and 0150m hcl chromic acid is h2cro4
what volume of 022 m fe ml should be diluted to 440 ml to make a solution containing 017 m
when an aqueous solution that is 1m each in hcl zncl2 and cobr2 is electrolyzed the elemental products formed initially
based on their reduction potentials what are the most likely cathode products in the electrolysis of an aqueous
two identical balloons are filled with the same volume one with air and one with helium the next day the volume of the
a segment of a dna strand has base sequence of c-g-a-t-t-g-c-a what is the base sequence of the other complementary
the artificial sweetener aspartame is a dipeptide made from two amino acids aspartic acid and phenylalaline write two
predict the wavelength in nm of the lowest energy electronic transition in the dye polymethine ion assume all c-c and
for the formation of a photchromic imine you use ammonium bromide give 2 reasons why you cannot use concentrated
a collection of electrons is confined to an infinitely deep well or 1-d box having a 4 nm width what wavelength photon
draw the structure of tristearin a fat in which all the fatty acid units are stearic acid circle and identify all
draw a complete mechanism for the reaction that occurs in this solvolysis experiment showing all the intermediates and
relative humidity is defined as the partial pressure of water vapor in the air expressed as a percentage of the
a balloon is filled with hydrogen gas and produces the following chemical reaction between iron and sulfuric acid fes
life is dependent on four major classes of biomolecules what are they why are they
in the double stranded helix structure of dna which bases are always hydrogen bonded to the following cytosine thymine
if the most common monosaccharides have the formula c6h12o6 why do the resulting disaccharides have the formula
the molecular formula for lactic acid is c3h6o3 and its structural formula is ch3chohcooh is this molecule a
the molar mass of cellulose is approximately 60 x 105 gmol and the molar mass of a soluble starch is on the order of 40